Question

afati ultina cifra a nr a= 6 la puterea 2006 + 2 la puterea 2001

Answer 1

^=puterea
6^2006
6^1=6
6^2=36 => U(6^2006)=6

2^2001
2^1=2
2^2=4
2^3=8
2^4=16
2^5=32
2001:4=50 r 1 => U(2^2001)=2
U(a)=U(6+2)=8